Goodwill And Intangible Assets (Summary Of Intangible Assets, Net) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2011 years employees customers companies projects	Dec. 31, 2010
Original Cost	$ 509.6	$ 431.6
Accumulated Amortization	(127.0)	(94.2)
Foreign Currency Translation Adjustment	(26.6)	(27.2)
Impairment	(7.7)	(7.2)
Carrying value	348.3	303.0
Useful Life, Maximum (in years)	18
Intellectual Property [Member]
Original Cost	13.9	13.9
Accumulated Amortization	(7.9)	(7.0)
Foreign Currency Translation Adjustment	0	0
Impairment	0	0
Carrying value	6.0	6.9
Useful Life, Minimum (in years)	5	5
Useful Life, Maximum (in years)	12	12
Assembled Workforce [Member]
Original Cost	6.7	6.7
Accumulated Amortization	(6.7)	(6.1)
Foreign Currency Translation Adjustment	0	0
Impairment	0	0
Carrying value	0	0.6
Finite-Lived Intangible Assets, Useful Life	5	5
Customer Relationships [Member]
Original Cost	280.3	250.5
Accumulated Amortization	(66.3)	(51.2)
Foreign Currency Translation Adjustment	(26.6)	(27.2)
Impairment	(3.2)	(3.2)
Carrying value	184.2	168.9
Useful Life, Minimum (in years)	5	5
Useful Life, Maximum (in years)	18	18
Non-compete Agreements [Member]
Original Cost	0.5	0.5
Accumulated Amortization	(0.5)	(0.5)
Foreign Currency Translation Adjustment	0	0
Impairment	0	0
Carrying value	0	0
Useful Life, Minimum (in years)	1	1
Useful Life, Maximum (in years)	3	3
Patents [Member]
Original Cost	43.7	16.7
Accumulated Amortization	(8.9)	(4.2)
Foreign Currency Translation Adjustment	0	0
Impairment	0	0
Carrying value	34.8	12.5
Finite-Lived Intangible Assets, Useful Life	12	12
Developed Technology [Member]
Original Cost	136.2	113.0
Accumulated Amortization	(31.9)	(22.5)
Foreign Currency Translation Adjustment	0	0
Impairment	(2.0)	(2.0)
Carrying value	102.3	88.5
Useful Life, Minimum (in years)	5	5
Useful Life, Maximum (in years)	12	12
Trademarks [Member]
Original Cost	14.0	11.0
Accumulated Amortization	(3.0)	(1.7)
Foreign Currency Translation Adjustment	0	0
Impairment		0
Carrying value	11.0	9.3
Finite-Lived Intangible Assets, Useful Life	15	15
In-Process Research and Development [Member]
Original Cost	12.5	18.3
Accumulated Amortization	0	0
Foreign Currency Translation Adjustment	0	0
Impairment	(2.5)	(2.0)
Carrying value	10.0	16.3
Finite-Lived Intangible Assets, Useful Life	8	8
Acquired Software [Member]
Original Cost	1.0	1.0
Accumulated Amortization	(1.0)	(1.0)
Foreign Currency Translation Adjustment	0	0
Impairment	0	0
Carrying value	0	0
Finite-Lived Intangible Assets, Useful Life	2	2
Backlog [Member]
Original Cost	0.8
Accumulated Amortization	(0.8)
Foreign Currency Translation Adjustment	0
Impairment	0
Carrying value	$ 0
Finite Lived Intangible Assets Useful Life1	0.3